The Demonic Heirloom is staff rewarded for defeating the Demon Lord in the Alchemical Laboratory on Easy, Medium, Hard or Ascension difficulty as an Apprentice or Adept.
This weapon's elemental damage is always poison.
Similar Boss Rewards[]
These are other boss rewards for completing the Alchemical Laboratory on Easy, Medium and Hard difficulty as other classes.
Huntress - Soul Sprayer
Monk - Spear of the Void
Squire - Demonic Training Blade